Multiquip MP2090HP - Manual (Page 30)

PAGE 30 — MQ MP2 MASONRY SAW — OPERATION MANUAL — REV. #2 (03/12/13)
MP2 MASONRY SAW — MAINTENANCE (SAW)
Adjust Belt Tension (Electric Powered Saws)
1. Remove the three belt guard screws securing the belt
guard to the frame and remove the belt guard.
2. Loosen the four motor mounting bolts.
3. To increase belt tension, tighten the two adjusting nuts
on the back of the motor plate.
Proper belt tension is 4-5 lbs. of force with approximately
3/16" of belt deflection measured at a point midway
between the pulleys.
4. Adjust motor adjusting nuts to apply proper tension while
maintaining pulley alignment and belt parallelism. Check
pulley alignment and parallelism with a straight edge
from motor pulley to bladeshaft pulley.
5. When proper belt tension and parallelism have been
achieved, tighten engine mounting bolts and re-attach
the belt guard.
Adjust Belt Tension (Gasoline Powered Saws)
1. Remove engine-to-jackshaft and jackshaft-to-bladeshaft
belt guards.
2. Check for proper belt tension on jackshaft-to-bladeshaft
belts and engine-to-jackshaft belts.
4-5 lbs of force applied to the mid-point between jackshaft
and bladeshaft pulleys should deflect the belt
approximately 3/16" on a used belt.
4-5 lbs of force applied to the mid-point between engine
and jackshaft pulleys should deflect the belt
approximately 1/8".
To adjust engine-to-jackshaft belts only:
1. Loosen engine mounting bolts.
2. Adjust engine adjusting nuts to apply proper tension while
maintaining pulley alignment and belt parallelism. Check
pulley alignment and parallelism with a straight edge
from jackshaft pulley to engine pulley.
It is very impor tant that the
jackshaft and blade arbor
remain
parallel to each other.
This can be accomplished by using
the adjusting bolt located on the engine mounting plate to
help keep the jackshaft from cocking.
NOTE
3. When proper belt tension and parallelism have been
achieved, tighten engine mounting bolts.
To adjust jackshaft-to-bladeshaft belt:
If the jackshaft-to-bladeshaft belt requires adjustment, it will
also be necessary to adjust the engine-to-jackshaft belts.
1. Loosen the 4 jackshaft mounting bolts, the 4 engine
mounting bolts, and the jackshaft adjuster screw jam
nuts (Loosen the mounting bolts only enough for the
jackshaft and the engine to slide easily.)
2. Adjust jackshaft-to-bladeshaft belt first. To increase
tension, tighten adjuster on bladeshaft belt side. To help
maintain belt parallelism, loosen the jackshaft adjuster
screw on the engine side the same number of turns that
the bladeshaft side adjuster screw was tightened. Using
a straight edge on the bladeshaft pulley to the jackshaft
pulley, check for pulley alignment and belt parallelism.
3 When belt tension is correct, pulleys are aligned, and
belts are parallel, tighten jackshaft mounting bolts and
adjuster screw jam nuts.
4. Check for proper engine-to-jackshaft belt tension (4-5
lbs with 1/8" deflection at mid-point between pulleys.)
5. Adjust engine adjuster bolts to apply proper tension while
maintaining pulley alignment and belt parallelism. Check
pulley alignment and parallelism with a straight edge
from jackshaft pulley to engine pulley.
6. When proper belt tension and parallelism have been
achieved, tighten engine mounting bolts.
Reinstall belt guards. Test saw operation.